Don't use 0.0.0.0

src/freedombone-app-mailpile

       echo 'User=mailpile';
       echo 'Group=mailpile';
       echo "WorkingDirectory=/var/www/$MAILPILE_DOMAIN_NAME/mail";
-      echo "ExecStart=/var/www/$MAILPILE_DOMAIN_NAME/mail/mp --www=0.0.0.0:${MAILPILE_PORT} --wait";
+      echo "ExecStart=/var/www/$MAILPILE_DOMAIN_NAME/mail/mp --www=127.0.0.1:${MAILPILE_PORT} --wait";
       echo 'Restart=always';
       echo 'RestartSec=10';
       echo '';

src/freedombone-app-matrix

     matrix_nginx_site=/etc/nginx/sites-available/$MATRIX_DOMAIN_NAME
     if [[ $ONION_ONLY == "no" ]]; then
         { echo 'server {';
-          echo "  listen 0.0.0.0:443;";
+          echo "  listen 443;";
           echo "  server_name ${MATRIX_DOMAIN_NAME};";
           echo '';
           echo '  # Security'; } > $matrix_nginx_site
           echo '}';
           echo '';
           echo 'server {';
-          echo "  listen 0.0.0.0:${MATRIX_HTTP_PORT};";
+          echo "  listen ${MATRIX_HTTP_PORT};";
           echo "  server_name ${MATRIX_DOMAIN_NAME};";
           echo '';
           echo '  # Security'; } >> $matrix_nginx_site